Yesterday as I as leaving my brothers house I didn’t realize he had one step down to the walkway and I completely overstepped thinking the floor was even. When my foot landed on the floor I got really tense and startled of course but I didn’t fall or anything. Immediately my lower abdomen got kinda hard for a few seconds and once I got into the car it went away. All night I was tossing and turning because I couldn’t get comfortable and I was starting to get soreness in my lower back and lower abdomen. Has this happened to anyone else?